Control system and methods for multi-mode privacy display

Abstract

A display apparatus includes a display device arranged to display an image and being capable of operating in a first mode and a second mode where the image remains visible in both the first mode and the second mode in an on-axis direction, and a visibility of the image is reduced in an off-axis direction in the second mode compared to the first mode. The display apparatus includes a control system capable of selectively operating the display device in the first mode or the second mode, where the control system is arranged to selectively control a characteristic of the displayed image in the first mode based on a first function based on a detected characteristic of ambient light and to selectively control a characteristic of the displayed image in the second mode based on a second function based on a detected characteristic of ambient light.

Dependencies are inferred from the claim text.